md中可以使用樣版導入css或者其他md內容 (#6)

assets/end_slides.md

@@ -0,0 +1,14 @@
+<style>
+ .top_right {
+ position: fixed!important;
+ top: 1em;
+ right: 1em;
+ }
+</style>
+
+<span id="end"></span>
+
+<section data-background-size="60%" data-background-image="{{.Img}}">
+
+<a href="{{.Href}}" class="top_right">🎉</a>
+</section>

assets/fragment.css

@@ -0,0 +1,3 @@
+:is(li, a, span).current-fragment {
+ color: #ff5a00;
+}

assets/pre.css

@@ -0,0 +1,11 @@
+.highlight-line .hljs-comment {
+ color: #70ff07 !important;
+ background-color: #000 !important;
+ font-style: italic;
+ font-size: large;
+}
+
+.highlight-line .hljs-ln-code {
+ color: yellow !important;
+ font-size: large;
+}

internal/tmpl/funcs/funcs.go

@@ -3,6 +3,7 @@ package funcs
 import (
  "errors"
  "reflect"
+ "strings"
 )
 
 func Dict(values ...any) (map[string]any, error) {
@@ -53,3 +54,7 @@ func List(args ...any) any {
  }
  return slice.Interface() // {interface() | []yourType
 }
+
+func Join(sep string, s ...string) string {
+ return strings.Join(s, sep)
+}

internal/tmpl/funcs/os.go

@@ -0,0 +1,51 @@
+package funcs
+
+import (
+ "bytes"
+ "io"
+ "net/http"
+ "text/template"
+)
+
+func TxtFrom(srcs ...string) (string, error) {
+ buf := bytes.NewBuffer(nil)
+ for _, src := range srcs {
+ resp, err := http.Get(src)
+ if err != nil {
+ return "", err
+ }
+ var body []byte
+ body, err = io.ReadAll(resp.Body)
+ if err != nil {
+ return "", err
+ }
+ buf.Write(body)
+ _ = resp.Body.Close()
+ }
+ return buf.String(), nil
+}
+
+// Tmpl 注意，此template不提供額外的FuncMap
+func Tmpl(src string, ctx map[string]any) (string, error) {
+ resp, err := http.Get(src)
+ if err != nil {
+ return "", err
+ }
+ var body []byte
+ body, err = io.ReadAll(resp.Body)
+ if err != nil {
+ return "", err
+ }
+ _ = resp.Body.Close()
+
+ var t *template.Template
+ t, err = template.New("").Parse(string(body))
+ if err != nil {
+ return "", err
+ }
+ buf := &bytes.Buffer{}
+ if err = t.Execute(buf, ctx); err != nil {
+ return "", err
+ }
+ return buf.String(), nil
+}

main.go

@@ -108,6 +108,14 @@ func HandleListMD(w http.ResponseWriter, r *http.Request) {
  _, _ = fmt.Fprintf(w, html)
 }
 
+func getBaseURL(r *http.Request) string {
+ scheme := "http"
+ if r.TLS != nil {
+ scheme = "https"
+ }
+ return fmt.Sprintf("%s://%s", scheme, r.Host)
+}
+
 // HandleTxt 回傳md目錄下的檔案內容，視為純文本
 func HandleTxt(w http.ResponseWriter, r *http.Request) {
  query := r.URL.Query()
@@ -127,8 +135,11 @@ func HandleTxt(w http.ResponseWriter, r *http.Request) {
 
  // 用go template處理之後再返回
  maps := funcs.Maps{
- "dict": funcs.Dict,
- "list": funcs.List, // slice 已經是保留字了，所以用list
+ "dict": funcs.Dict,
+ "list": funcs.List, // slice 已經是保留字了，所以用list
+ "join": funcs.Join,
+ "txtFrom": funcs.TxtFrom,
+ "tmpl": funcs.Tmpl,
  }.AddMaps(funcs.MathMaps())
  tmpl := textTemplate.New("").Funcs(textTemplate.FuncMap(maps))
  tmpl, err = tmpl.Parse(string(bs))
@@ -137,7 +148,9 @@ func HandleTxt(w http.ResponseWriter, r *http.Request) {
  http.Error(w, err.Error(), http.StatusInternalServerError)
  return
  }
- if err = tmpl.Execute(w, nil); err != nil {
+ if err = tmpl.Execute(w, map[string]any{
+ "BaseURL": getBaseURL(r),
+ }); err != nil {
  log.Println(err)
  http.Error(w, err.Error(), http.StatusInternalServerError)
  return

md/test_txtfrom.md

@@ -0,0 +1,47 @@
+{{printf "<style>%s</style>" (txtFrom
+ (printf "%s%s" .BaseURL "/assets/pre.css")
+ (printf "%s%s" .BaseURL "/assets/fragment.css")
+)
+}}
+
+```go [|2|3-5|7|8|7-8]
+type VheaTable struct {
+Version uint32 // 0x00010000 or 0x00110000
+Ascent int16
+Descent int16
+LineGap int16 // Reserved; set to 0
+AHMax uint16
+
+MinTSB int16
+MinBSB int16
+YMaxExtent int16
+CaretSlopeRise int16
+CaretSlopeRun int16
+CaretOffset int16
+reserved1 int16
+reserved2 int16
+reserved3 int16
+reserved4 int16
+MetricDataFormat int16
+
+NumMetrics uint16
+}
+
+```
+
+---
+
+- This is an <span class="fragment grow">apple</span>
+- This is a <span class="fragment grow">pen</span>
+
+Note:
+
+透過fragment.css達成grow時顏色修改 `:is(li, a, span).current-fragment {color: #ff5a00;}`
+
+---
+
+{{tmpl (join "" .BaseURL "/assets/end_slides.md") (dict "Img" "/assets/home2.webp" "Href" "/md/example.md?theme=sky#3/2")}}
+
+Note:
+
+透過這種方式可以將指定的樣板匯入